Red Tangerine Peel Classic Formulas … Natural Herb Library

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Transforms phlegm and dries dampness ... Ju Hong Pi is the red outer tangerine peel lane used for cough, chest congestion, sticky sputum, and damp-phlegm obstruction.
Regulates qi and relieves fullness ... like Chen Pi it opens the middle burner, reduces distension, and improves appetite when phlegm and food stagnation travel together.
Relieves cough and wheezing ... classical use favors it when phlegm blocks the Lung and the cough is heavy, productive, or hard to clear.

Ju Hong Wan ... straightforward formula family centered on red tangerine peel for phlegm cough.
Er Chen Tang modifications ... Ju Hong Pi deepens the phlegm-transforming citrus direction when sputum is thicker and the chest feels obstructed.
Cough and damp-phlegm combinations with Ban Xia and Fu Ling ... classical pairing style when phlegm and digestive dampness coexist.

Traditional herb texts describe Ju Hong as acrid, bitter, and warm, entering the Lung and Spleen to dry dampness, transform phlegm, and regulate qi.
Its identification depends on emphasizing the red exocarp rather than a thick pith-rich peel, which is why it is kept separate from Chen Pi and Hua Ju Hong.